TY  - CHAP
A1  - Rosin, J.
A1  - Mykoniou, K.
A1  - Butenweg, Christoph
T1  - Analysis Of Base Isolated Liquid Storage Tanks With 3D Fsi-Analysis As Well As Simplified Approaches
T2  - 16th World Conference on Earthquake Engineering, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
N2  - Tanks are preferably designed, for cost-saving reasons, as circular, cylindrical, thin-walled shells. In case of seismic excitation, these constructions are highly vulnerable to stability failures. An earthquake-resistant design of rigidly supported tanks for high seismic loading demands, however, uneconomic wall thicknesses. A cost-effective alternative can be provided by base isolation systems. In this paper, a simplified seismic design procedure for base isolated tanks is introduced, by appropriately modifying the standard mechanical model for flexible, rigidly supported tanks. The non-linear behavior of conventional base isolation systems becomes an integral part of a proposed simplified process, which enables
the assessment of the reduced hydrodynamic forces acting on the tank walls and the corresponding stress distribution. The impulsive and convective actions of the liquid are taken into account. The validity of this approach is evaluated by
employing a non-linear fluid-structure interaction algorithm of finite element method. Special focus is placed on the boundary conditions imposed from the base isolation and the resulting hydrodynamic pressures. Both horizontal and vertical
component of ground motion are considered in order to study the principal effects of the base isolation on the pressure distribution of the tank walls. The induced rocking effects associated with elastomeric bearings are discussed. The results
manifest that base isolated tanks can be designed for seismic loads by means of the proposed procedure with sufficient accuracy, allowing to dispense with numerically expensive techniques.
KW  - liquid storage tank
KW  - seismic isolation
KW  - elastomeric bearing
KW  - friction pendulum bearing
KW  - simplified approach
Y1  - 2017
N1  - Paper No 2246
SP  - 1
EP  - 14
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  - 
TY  - CHAP
A1  - Gedle, Yibekal
A1  - Schmitz, Mark
A1  - Gielen, Hans
A1  - Schmitz, Pascal
A1  - Herrmann, Ulf
A1  - Teixeira Boura, Cristiano José
A1  - Mahdi, Zahra
A1  - Caminos, Ricardo Alexander Chico
A1  - Dersch, Jürgen
T1  - Analysis of an integrated CSP-PV hybrid power plant
T2  - SOLARPACES 2020
N2  - In the past, CSP and PV have been seen as competing technologies. Despite massive reductions in the electricity generation costs of CSP plants, PV power generation is - at least during sunshine hours - significantly cheaper. If electricity is required not only during the daytime, but around the clock, CSP with its inherent thermal energy storage gets an advantage in terms of LEC. There are a few examples of projects in which CSP plants and PV plants have been co-located, meaning that they feed into the same grid connection point and ideally optimize their operation strategy to yield an overall benefit. In the past eight years, TSK Flagsol has developed a plant concept, which merges both solar technologies into one highly Integrated CSP-PV-Hybrid (ICPH) power plant. Here, unlike in simply co-located concepts, as analyzed e.g. in [1] – [4], excess PV power that would have to be dumped is used in electric molten salt heaters to increase the storage temperature, improving storage and conversion efficiency. The authors demonstrate the electricity cost sensitivity to subsystem sizing for various market scenarios, and compare the resulting optimized ICPH plants with co-located hybrid plants. Independent of the three feed-in tariffs that have been assumed, the ICPH plant shows an electricity cost advantage of almost 20% while maintaining a high degree of flexibility in power dispatch as it is characteristic for CSP power plants. As all components of such an innovative concept are well proven, the system is ready for commercial market implementation. A first project is already contracted and in early engineering execution.
KW  - Hybrid energy system
KW  - Power plants
KW  - Electricity generation
KW  - Energy storage
KW  - Associated liquids
Y1  - 2022
SN  - 978-0-7354-4195-8
U6  - https://doi.org/10.1063/5.0086236
SN  - 1551-7616 (online)
SN  - 0094-243X (print)
N1  - SOLARPACES 2020: 26th International Conference on Concentrating Solar Power and Chemical Energy Systems, 28 September–2 October 2020, Freiburg, Germany
IS  - 2445 / 1
PB  - AIP conference proceedings / American Institute of Physics
CY  - Melville, NY
ER  - 
TY  - JOUR
A1  - Block, Simon
A1  - Viebahn, Peter
A1  - Jungbluth, Christian
T1  - Analysing direct air capture for enabling negative emissions in Germany: an assessment of the resource requirements and costs of a potential rollout in 2045
JF  - Frontiers in Climate
N2  - Direct air capture (DAC) combined with subsequent storage (DACCS) is discussed as one promising carbon dioxide removal option. The aim of this paper is to analyse and comparatively classify the resource consumption (land use, renewable energy and water) and costs of possible DAC implementation pathways for Germany. The paths are based on a selected, existing climate neutrality scenario that requires the removal of 20 Mt of carbon dioxide (CO2) per year by DACCS from 2045. The analysis focuses on the so-called “low-temperature” DAC process, which might be more advantageous for Germany than the “high-temperature” one. In four case studies, we examine potential sites in northern, central and southern Germany, thereby using the most suitable renewable energies for electricity and heat generation. We show that the deployment of DAC results in large-scale land use and high energy needs. The land use in the range of 167–353 km2 results mainly from the area required for renewable energy generation. The total electrical energy demand of 14.4 TWh per year, of which 46% is needed to operate heat pumps to supply the heat demand of the DAC process, corresponds to around 1.4% of Germany's envisaged electricity demand in 2045. 20 Mt of water are provided yearly, corresponding to 40% of the city of Cologne‘s water demand (1.1 million inhabitants). The capture of CO2 (DAC) incurs levelised costs of 125–138 EUR per tonne of CO2, whereby the provision of the required energy via photovoltaics in southern Germany represents the lowest value of the four case studies. This does not include the costs associated with balancing its volatility. Taking into account transporting the CO2 via pipeline to the port of Wilhelmshaven, followed by transporting and sequestering the CO2 in geological storage sites in the Norwegian North Sea (DACCS), the levelised costs increase to 161–176 EUR/tCO2. Due to the longer transport distances from southern and central Germany, a northern German site using wind turbines would be the most favourable.
KW  - rollout
KW  - economics
KW  - Germany
KW  - negative emissions
KW  - carbon dioxide removal
KW  - climate neutrality
KW  - DAC
KW  - direct air capture
Y1  - 2024
U6  - https://doi.org/10.3389/fclim.2024.1353939
SN  - 2624-9553
VL  - 6
PB  - Frontiers
CY  - Lausanne
ER  - 
TY  - THES
A1  - Borchert, Jörg
T1  - Analyse von Determinanten der Großhandelspreise für Elektrizität anhand einer Systemstudie des deutschen Marktes
Y1  - 2003
N1  - Berlin, Techn. Univ., Diss., 2003
ER  - 
TY  - JOUR
A1  - Kuperjans, Isabel
A1  - Starke, M.
A1  - Esser, J.
A1  - [u.a.], 
T1  - Analyse und Konzeption von Energieanlagen unter ökologischen, wirtschaftlichen und technischen Gesichtspunkten
JF  - WLB : Umwelttechnik für Industrie und Kommune
Y1  - 2000
SN  - 0341-2679
VL  - 44
IS  - 11/12
SP  - 26
EP  - 29
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Verghese, S.
A1  - Zamdmer, N.
A1  - Hu, Qing
T1  - An optical correlator using a low-temperature-grown GaAs photoconductor / S. Verghese ; N. Zamdmer ; Qing Hu .... A. Förster
JF  - Applied physics letters. 69 (1996), H. 6
Y1  - 1996
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 842
EP  - 844
ER  - 
TY  - CHAP
A1  - Pütz, Sebastian
A1  - Baier, Ralph
A1  - Brauner, Philipp
A1  - Brillowski, Florian
A1  - Dammers, Hannah
A1  - Liehner, Luca
A1  - Mertens, Alexander
A1  - Rodemann, Niklas
A1  - Schneider, Sebastian
A1  - Schollemann, Alexander
A1  - Steuer-Dankert, Linda
A1  - Vervier, Luisa
A1  - Gries, Thomas
A1  - Leicht-Scholten, Carmen
A1  - Nagel, Saskia K.
A1  - Piller, Frank T.
A1  - Schuh, Günther
A1  - Ziefle, Martina
A1  - Nitsch, Verena
T1  - An interdisciplinary view on humane interfaces for digital shadows in the internet of production
T2  - 2022 15th International Conference on Human System Interaction (HSI)
N2  - Digital shadows play a central role for the next generation industrial internet, also known as Internet of Production (IoP). However, prior research has not considered systematically how human actors interact with digital shadows, shaping their potential for success. To address this research gap, we assembled an interdisciplinary team of authors from diverse areas of human-centered research to propose and discuss design and research recommendations for the implementation of industrial user interfaces for digital shadows, as they are currently conceptualized for the IoP. Based on the four use cases of decision support systems, knowledge sharing in global production networks, human-robot collaboration, and monitoring employee workload, we derive recommendations for interface design and enhancing workers’ capabilities. This analysis is extended by introducing requirements from the higher-level perspectives of governance and organization.
KW  - digital twin
KW  - digital shadow
KW  - cyber-physical production system
KW  - human-machine interface
Y1  - 2022
SN  - 978-1-6654-6823-7 (Print)
SN  - 978-1-6654-6822-0 (Online)
U6  - https://doi.org/10.1109/HSI55341.2022.9869467
SN  - 2158-2246 (Print)
SN  - 2158-2254 (Online)
N1  - 15th International Conference on Human System Interaction (HSI), 28-31 July 2022, Melbourne, Australia.
PB  - IEEE
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Marso, M.
A1  - Gersdorf, P.
A1  - Fox, A.
T1  - An InAlAs-InGaAs OPFET with responsivity above 200 A/W at 1.3-μm wavelength. Marso, M.; Gersdorf, P.; Fox, A.; Hodel, U.; Lambertini, R.; Kordos, P.
JF  - IEEE Photonics Technology Letters. 11 (1999), H. 1
Y1  - 1999
SN  - 1041-1135
SP  - 117
EP  - 119
ER  - 
TY  - JOUR
A1  - Lück, Reinhard
A1  - Gerling, Ulrich
A1  - Predel, Bruno
T1  - An entropy paradox of the association model
JF  - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 80, H. 4
Y1  - 1989
SN  - 0044-3093 ; 0179-4841
SP  - 270
EP  - 275
ER  - 
TY  - CHAP
A1  - Gömmel, Andreas
A1  - Kob, Malte
A1  - Niendorf, Thoralf
A1  - Butenweg, Christoph
T1  - An approach for numerical calculation of glottal flow during glottal closure
T2  - Proceedings / NAG/DAGA 2009, International Conference on Acoustics : Rotterdam, 23 - 26 March 2009 ; [including the 35th German Annual Conference on Acoustics (DAGA)] / [organisers: Acoustical Society of the Netherlands (NAG); German Acoustical Society (DEGA) ...]. Ed. by Marinus M. Boone
Y1  - 2009
SN  - 978-3-9808659-6-8
SP  - 1722
EP  - 1725
PB  - DEGA
CY  - Berlin
ER  -